CN108883017A

CN108883017A - disposable diaper

Info

Publication number: CN108883017A
Application number: CN201780017036.2A
Authority: CN
Inventors: 杉山胜彦
Original assignee: Oji Paper Co Ltd
Current assignee: New Oji Paper Co Ltd; Oji Holdings Corp
Priority date: 2016-03-17
Filing date: 2017-02-24
Publication date: 2018-11-23
Anticipated expiration: 2037-02-24
Also published as: JP6558285B2; WO2017159295A1; JP2017164360A; CN108883017B; TW201735883A; TWI716551B

Abstract

Project of the present invention is to improve the aeration of tuck forming part in the disposable diaper for being separated into predecessor's exterior body, rear body exterior body and absorbability ontology.Solution of the invention provides a kind of disposable diaper, has：Predecessor's exterior body (10), rear body exterior body (20) and absorbability ontology (30), wherein absorbability ontology (30) has：Absorber (31), liquid permeable top sheet (32), and coating opaque liquid tergite (33), again, absorbability ontology (30), the two or the exterior body of any one of predecessor's exterior body (10) Yu rear body exterior body (20) are attached to the linking part (40) of upper fold and downward folding part via what there is the width direction for extending diaper, wherein, the recess portion (38) or run through the through portion of thickness direction that absorber (31) at least there is the thickness direction towards the absorber (31) to be recessed in the two of predecessor's exterior body (10) side and rear body exterior body (20) side where linking part (40) or the end of any one.

Description

Disposable diaper

Technical field

The present invention is about the in-leg for being through wearer, to absorb and keep the disposable diaper of the liquid such as urine.

Background technique

Traditionally, it has been well-known that rear body, which is formed with the disposable diaper of multiple tucks,.For example, patent document 1 is taken off In the disposable diaper of dew, tuck is formed by the sheet element of body after constituting along upward broken line and downward folding line. The tuck is able to cooperate the stretching, extension at wearer back when such as wearer leans forward and is unfolded towards up and down direction.It is therefore possible to prevent urine The rear body of cloth is in relaxed state near in-leg towards the displacement of the in-leg direction of wearer, moreover, can avoid because of rear body section Curtailment and the back that enables a wearer to is exposed, or the situation in gap is generated between disposable diaper and wearer back.

Existing technical literature

Patent document

1 Japanese Unexamined Patent Publication 2012-239555 bulletin of patent document

Summary of the invention

Invent the project to be solved

As previously mentioned, forming multiple tucks by the rear body in disposable diaper, it cooperate diaper can and comply with wearer's body The stretching, extension of body, and promote the fit sense or wearing feeling of diaper.However, since the tuck is to fold institute by constituting the sheet element of rear body It is formed, so the aeration of sheet element overlapping part can reduce, makes moisture entrapment between wearer's skin and diaper, have because wet Anxiety bored and that unplessantness displeasure is brought to wearer.In addition, more having the problem of aeration significant decrease when tuck number is multiple.

Thus, the purpose of the present invention is being separated into the deserted of predecessor's exterior body, rear body exterior body and absorbability ontology In diaper, the aeration of tuck forming part is improved.

Solve the technical solution of project

The present invention is about a kind of disposable diaper.Disposable diaper of the invention has：Before wearer's abdomen side Body exterior body 10, positioned at the rear body exterior body 20 of wearer back side and positioned at the absorbability ontology 30 of wearer's in-leg.This Outside, absorbability ontology 30 has：Absorber 31, the liquid permeable top sheet 32 towards skin face of coating absorber 31 and coating The opaque liquid tergite 33 in the not face skin face of absorber 31.It present invention can be suitably applied to underwear type disposable diaper and band type Disposable diaper it is any.Underwear type disposable diaper, predecessor's exterior body 10 and rear body exterior body 20 are by abandoning being located at Side sealing portion engagement at left and right sides of formula diaper width direction and be connected to substantially a ring-shaped, and be formed with and surrounded positioned at wearer The type of the loins opening portion of belly part and the leg opening part around bipod part positioned at wearer.Band type is abandoned Formula diaper is then that the width direction both side ends of one side exterior body in predecessor's exterior body 10 Yu rear body exterior body 20 are equipped with a left side The right above fixing belt of a pair, and the type of wearer's in-leg is installed in by fixing belt is fixed on another side exterior body.

Absorbability ontology 30 via have extend disposable diaper width direction to upper fold 41 and downwards folding part 42 Linking part 40 and be linked to the two or the exterior body of any one of predecessor's exterior body 10 Yu rear body exterior body 20.It is referred to herein " to upper fold " refers to that upward convex fold back part in wearing effect, alleged " downward folding part " then refer to downwardly convex in wearing effect Fold back part.In addition, the linking part 40 can be to separate from predecessor's exterior body 10, rear body exterior body 20 and absorbability ontology 30 Other individual member, can also for absorbability ontology 30 in one component, or can also for exterior body in one structure Part.In addition, when list claims " exterior body ", referring to the two or any of predecessor's exterior body 10 and rear body exterior body 20 in this case specification Person.

According to above-mentioned composition, by the way that linking part 40 is arranged between absorbability ontology 30 and exterior body 10,20, and in the connection Portion 40 forms tuck, that is, the aeration of tuck forming part can be improved.

Furthermore by forming the tuck from constituting to upper fold 41 and downward folding part 42 in linking part 40, this is to upper fold Space can be generated between 41 and wearer's skin.Space inside such tuck is deserted with making to be stranded in wearing effect The effect of moisture diffusion in diaper.Also that is, when moisture import tuck inside space when, the moisture can be along tuck inside The width direction of space towards disposable diaper extends.Therefore, by forming tuck in linking part 40, the aeration of diaper is mentioned It rises, the comfort of wearing effect, which can get, to be improved.

But in the wearing effect of disposable diaper, tuck is flattened by clothing towards thickness direction, tuck and wearer's skin it Between be difficult to generate space, the wetly misgivings being stranded in herein.Therefore, in the present invention, absorber 31 is at least in 40 institute of linking part 10 side of predecessor's exterior body have with the two of rear 20 side of body exterior body or the end of any one：To the thickness of the absorber 31 Direction recess recess portion 38 or penetrate through the absorber 31 thickness direction through portion.In addition, so-called herein " recess portion " can also be The chase formed by the compression of 31 absorbent material of absorber will be constituted.In addition, " recess portion " can also be than 31 surface of absorber In the recessed aspect in the small a part of region in most of region, recess portion is constituted by the small portion region, it can also be It is in aspect of the small a part of region in protrusion than 31 surface major part region of absorber, most of region on the surface is constituted " recess portion "." through portion " is the region on the thickness direction of absorber 31 there is no absorbent material and other materials.Perforation Portion can be through hole, can also be to crack.

According to above-mentioned composition, by the way that the end formation recess portion 38 of 31 length direction of absorber of side is arranged in linking part 40 or passes through Logical portion, can ensure the gap between tuck and wearer's skin by the recess portion 38 or through portion.It thereby constitutes, can improve Linking part 40 is in the aeration of folded state.Furthermore even if in the state flattened by clothing of tuck of linking part 40, due to passing through Recess portion 38 or through portion are formed in the end of absorber 31, just can produce gap between tuck and wearer's skin, and can be prevented Moisture entrapment is at this.In addition, in the present invention, when the length of 31 length direction of absorber is set as 100%, so-called absorber 31 The end of length direction, can be for example from each ora terminalis of length direction has 30% length towards center direction, and it is wide Degree is identical each region with the entire width of absorber 31.Recess portion 38 not only may be formed at end, also may be formed at absorber 31 Whole region.Furthermore as described later, recess portion 38 also may be formed at the anti-of the wearer side opposite with the one side of wearer side Face, to improve aeration.Moreover, when absorber 31 has the case where recess portion 38, recess portion 38 is preferably with its depth from deserted urine The mode that the central portion in cloth length direction shoals to end is formed.

In the present invention, linking part 40 has the intermediate region 43 being located between upper fold 41 and downward folding part 42.Connection In the state to upper fold 41 and downward folding part 42 in folding, intermediate region 43 is preferably thickness direction and absorber 31 in portion 40 Recess portion 38 or through portion formed region overlapping.If constituting according to this, i.e., it is inserted in the end of absorber 31 by linking part 40 Tuck be formed by the state in space.It thereby acts on, flowing can be imported in the body fluid or soft stool of 31 length direction of absorber Tuck inner space due to that can absorb body fluid or soft stool by absorber 31, therefore is able to prevent sewing for body fluid.Furthermore even if When the case where end of such absorber 31 is Chong Die with tuck, since its end is formed with recess portion 38 or through portion, therefore it can ensure that The aeration of the part.

In the present invention, the intermediate region 43 of linking part 40 preferably has engaging zones 43a, and engaging zones 43a is even Knot 40 in folding part 42 to upper fold 41 and downwards in the state folded, it is peelable or be not engaged in the middle area strippingly Domain 43 in face of towards skin surface side position and in face of not face skin surface side position the two or the position of any one.Separately Outside, intermediate region 43 is not only engaged in face-to-face to the position of skin surface side in engaging zones 43a, can also with face not face The position of skin surface side engages.In this situation, the preferred position engaging zones 43a is in the intermediate region of linking part 40 43 and absorbability Ontology 31 is in the nonoverlapping region of thickness direction.In this way, linking part 40 can by strippable engaging zones 43a and with it is right When facial position engages, according to need by removing engaging zones 43a, linking part 40 can be made towards the length side of disposable diaper To expansion.Furthermore when linking part 40 is by not strippable engaging zones 43a and with opposite position local engagement, according to need can Linking part 40 is unfolded in non-set out region 43b towards the length direction of disposable diaper.In addition, underwear type disposable diaper In, so-called side sealing portion 4 also may be interpreted as it as so-called engaging zones 43a herein to function.

In the present invention, the absorber 31 of absorbability ontology 30 can also be in linking part 40 to 41 fold back of upper fold.Also that is, inhaling The absorber 31 of the property received ontology 30 is more than linking part 40 to upper fold 41 and in elongated lengthwise, makes one of absorber 31 Divide edge to 41 fold back of upper fold, and forms double-layer overlapping in thickness direction.In addition, in the present invention, so-called fold back, it is not necessary to only limit To be completely in N font, as long as being inverted along its length in face.For example, to upper fold 41 and downward folding part 42 also by U-shaped Type fold back portion is formed with inverted u-shaped fold back portion.

It can be by suction by making a part of absorber 31 along linking part 40 to 41 fold back of upper fold according to above-mentioned composition The rigidity of acceptor 31 and keep the space inside tuck really.Therefore, even if in a thickness direction from the outside of disposable diaper By external force, the space inside tuck is also not easy to be crushed for side.Thus, the moisture being stranded in disposable diaper will be imported into Space inside tuck, then spread along the width direction of the space towards diaper, and be easy to be discharged to outside.As a result, diaper inside Aeration can obtain promotion, the comfort of diaper is improved.

In the present invention, absorber 31 preferably 10 side of predecessor's exterior body and rear 20 side of body exterior body the two or any one End has coating region 39 or low weight per unit area region, exists in the thickness ratio of the absorber 31 of aforementioned coating region 39 The thickness of the absorber 31 of the central portion of the disposable diaper length direction is thin, in being somebody's turn to do for aforementioned low weight per unit area region Unit area weight of the weight per unit area of absorber 31 than the absorber 31 of the central portion in disposable diaper length direction It measures small.So-called coating region 39 refers to the thickness of absorber 31 part thin compared with the central portion of length direction, is located at absorber The end of 31 length direction.So-called low weight per unit area region then refers to that the weight per unit area of absorber 31 is less than length side To central portion part, be located at absorber 31 length direction end.Though absorber 31 is by the exterior of disposable diaper Body (predecessor's exterior body 10 and rear body exterior body 20) contact wearer, but disposable diaper does not have the region of absorber and tool absorbs Segment difference can be generated between the region of body.In the state of having segment difference, when wearer sits down or lies down, there can be pressure office because of segment difference Portion acts on wearer's skin, and has the situation for generating pain or unplessantness displeasure or sense of discomfort.By the wheel of thinning absorber 31 Wide (end) or weight per unit area reduce, so that it may prevent from making because of segment difference skin to be locally under pressure situation.Based on same Reason, when absorber 31 has recess portion 38 or through portion, the neighboring area of recess portion 38 and through portion is coating region 39 or low list Plane product weight area also can, cause pressure office because of recess portion 38 and through portion and the segment difference of the part other than other to prevent Portion acts on wearer's skin.

According to above-mentioned composition, by making the thickness thinning of the end of 31 length direction of absorber or reducing the unit area of end Weight can improve the aeration near the end.In particular, as previously mentioned, the end of absorber 31 along linking part 40 to In the form of 41 fold back of upper fold, by the fold back part of absorber 31 is set as coating region 39 or low weight per unit area area Domain, to improving, aeration is very effective.The thickness of the central portion of 31 length direction of absorber is usually 3~6mm, preferably 4~ 5mm.In this situation, the thickness of coating region 39 is preferably 1~4mm.By the way that the thickness of coating region 39 is located at this range, Absorber 31 is not susceptible to the situation of body change.Absorber 31 end have low weight per unit area region situation in, Assuming that when the weight per unit area of the absorber 31 of the central portion of length direction is 100%, the list in low weight per unit area region Position area weight is preferably 10~80%, and more preferably 20~75%, still more preferably from 30~70%.

Invention effect

If according to the present invention, in the disposable diaper for being separated into predecessor's exterior body, rear body exterior body and absorbability ontology, The aeration of tuck forming part can be improved.

Detailed description of the invention

Fig. 1 is the schematic appearance perspective view of the disposable diaper of an embodiment of the present invention.

Fig. 2 is the expanded view of the disposable diaper of an embodiment of the present invention.

Fig. 3 is the profilograph of the disposable diaper of an embodiment of the present invention.

Fig. 4 is the profilograph that the state of tuck is unfolded from state shown in Fig. 3.

Fig. 5 is the stereoscopic figure that the state of tuck is unfolded from state shown in Fig. 1.

Fig. 6 is that the amplified essential part in rear body side in profilograph shown in Fig. 3 amplifies profilograph.

Fig. 7 is the sectional view of disposable diaper change case of the present invention corresponding with Fig. 6.

Specific embodiment

Hereinafter, being illustrated using attached drawing with regard to embodiments of the present invention.The present invention is not limited to sides described below Formula also may include from following mode current row dealers aobvious and be apparent from the change appropriate carried out by range.

In this case specification, alleged " length direction " is the front-rear direction of disposable diaper, it is intended that before disposable diaper The link direction of body and rear body.Furthermore alleged " width direction " means direction orthogonal to the longitudinal direction in the plane.This case is attached In figure, " length direction " is indicated with Y-axis, and " width direction " is then indicated with X-axis.

It is alleged to refer in the wearing effect of disposable diaper " towards skin face " in this case specification, towards wearer's flesh The face of skin.Furthermore alleged " not face skin face " then refers in the wearing effect of disposable diaper, non-in face of wearer's skin Face, also that is, with the face towards skin face opposite side.

In this case specification, alleged " A~B " means " A or more B or less ".

(exterior body and absorbability ontology)

Fig. 1 is the stereoscopic figure of the disposable diaper of an embodiment of the present invention.Furthermore Fig. 2 is deserted shown in Fig. 1 The expanded view of diaper is shown from the state towards skin surface side overlook view diaper.In addition, Fig. 3 is deserted urine shown in Fig. 1 The profilograph of cloth is the profile construction of III-III hatching shown in Fig. 1.In this case specification, lifts the present invention and apply Explanation for the present invention is carried out in case where underwear type disposable diaper.But it is thrown the present invention is not limited to be used in underwear type Abandoning formula diaper is also applicable in band type disposable diaper.

As shown in Figure 1 to Figure 3, disposable diaper 100 of the invention is divided into length direction (Y direction)：Contact is worn The predecessor 1 of person's abdomen, contact wearer back rear body 2 and the lower crotch 3 between predecessor 1 and rear body 2.This implementation In mode, predecessor's exterior body 10 is located at predecessor 1, and rear body exterior body 20 is then located at rear body 2.In addition, under absorbability ontology 30 is located at Crotch 3, the absorbability ontology 30 overlap predecessor 1 and rear body 2 centered on lower crotch 3 and extend length direction.Therefore, it absorbs Property ontology 30 in, the end of 1 side of predecessor and predecessor's exterior body 10 are overlapped in thickness direction.On the other hand, the end of rear 2 side of body is then Thickness direction is overlapped in rear body exterior body 20.In the present invention, predecessor's exterior body 10, rear body exterior body 20 and absorbability ontology 30 are substantially constituted with other component.In present embodiment, each exterior body 10,20 is formed as width direction in vertical view It is longer substantially rectangular.Moreover, to be created as length direction in vertical view longer substantially rectangular for absorbability ontology 30.But respectively The shape of exterior body 10,20 and absorbability ontology 30 is not limited to the shape of attached drawing, in the range of can play function of the present invention, It can suitably be deformed.

Furthermore the left and right ends portion of predecessor's exterior body 10 and rear 20 width direction of body exterior body (X-direction) is equipped with side Sealing portion 4.In the side sealing portion 4, the position in face of predecessor's exterior body 10 and rear 20 left and right ends of body exterior body engages each other. The prior art methods such as the bonding such as heat sealing, ultrasonic sealing-in or using hot-melt adhesive can be used in joint method.Such as Fig. 1 It is shown, it is engaged with rear body exterior body 20 in side sealing portion 4 by predecessor's exterior body 10, and make these exterior bodies 10,20 It is connected into a ring shape.Moreover, defining loins opening portion 5 by the upper limb of predecessor's exterior body 10 and rear body exterior body 20.Furthermore from The lower end of predecessor's exterior body 10 is equipped with absorbability ontology 30 to the lower end of rear body exterior body 20 in a manner of erection.Cause This, can define left and right leg opening part 6 by the left and right sides edge of absorbability ontology 30 and the lower edge of each exterior body 10,20. Wearer can penetrate bipod from loins opening portion 5, then respectively stretch out a foot from left and right leg opening part 6, can throw underwear type Abandoning formula diaper 100 is put on.

As shown in figure 3, each exterior body 10,20 has：Positioned at the inner sheet 11,21 towards skin surface side；Positioned at not face flesh The outer plate 12,22 of skin surface side；And the one or more loins telescoping member 13,23 between inner sheet and outer plate.Loins is flexible When component 13,23 is a plurality of, it is configured to separate predetermined space towards length direction.Each loins telescoping member 13,23 is loose towards diaper It sandwiches and is fixed between inner sheet 11,21 and outer plate 12,22 in the state of the elongation of degree direction.For example, hot-melt adhesive etc. is straight It connects in the loins telescoping member 13,23 for being coated on elongation state, then is coated with the part body configuration of the bonding agent in inner sheet 11,21 Between outer plate 12,22.Thereby mode, when loins telescoping member 13,23 is shunk, inner sheet 11,21 and outer plate 12,22 will It scratches wrinkle and forms multiple tiny gauffers (loins gauffer).Though the configuration item number of loins telescoping member 13,23 is not particularly limited, preferably For such as 3~20 or 4~15.

The sheet element for forming inner sheet 11,21 and outer plate 12,22 can utilize known product, though be not particularly limited, preferably with The good non-woven fabrics former of skin sense of touch.Non-woven fabrics can enumerate such as Breathable nonwoven, point bonding non-woven fabrics, spun-bonded non-woven fabrics, Air-laid nonwoven fabrics, melt spraying non-woven fabrics, SMS non-woven fabrics, SMMS non-woven fabrics etc..In addition, loins telescoping member 13,23 is available Known elastic telescopic component, but be relatively applicable in such as silk thread shape elastic rubber.Such rubber material can be used vinyl benzene rubber, Olefin-based rubber, amido formate system rubber, ester system rubber, polyurethane, polyethylene, polystyrene, styrene-fourth two The materials such as alkene, silicone, polyester.

Furthermore as shown in figure 3, outer plate 12,22 can also be made to extend more towards the top than inner sheet 11,21 in length direction, then will The extension loins opening portion 5 ora terminalis fold back in towards skin surface side, and be engaged in inner sheet 11,21 towards skin Face.By the skin soft-touch that loins opening portion 5 in this way, can be made.

As shown in figure 3, absorbability ontology 30 substantially has：To the absorber 31 for absorbing body fluid and being kept；Quilt Cover the liquid permeable top sheet 32 towards skin face of the absorber 31；And be coated the absorber 31 not face skin face it is impermeable Fluidity tergite 33.Top flat 32 is engaged with tergite 33 in the peripheral part of absorber 31.The body fluid drained from the in-leg of wearer It is perforated through top flat 32 and is oriented to absorber 31, and prevent it from leaking out to outside by tergite 33.

Absorber 31 is to absorb the body fluid such as urine, and the component that the body fluid absorbed is kept.Absorber 31 Absorbent material is usually coated by the cores Wrapping sheet such as facial tissue to constitute.Habit can be used in the absorbent material for constituting absorber 31 Know material.Such as fluff pulp, superabsorbent polymer or hydrophilic sheet can be used in absorbent material.In addition, absorbent material can 1 kind is used alone in fluff pulp, superabsorbent polymer or hydrophilic sheet, can also be used in combination of two or more.Absorbent material It is generally available the seat blanket product to form single-layer or multi-layer.The shape of absorber 31 can cooperate the shape of disposable diaper, size, Purposes is come appropriately designed.For example, the shape of absorber 31 can be made hourglass type as illustrated in fig. 2, it can also be made and generally use Rectangle, oval or calabash shape.In addition, as shown in Fig. 2, absorber 31 is formed with recess portion 38 in the end of length direction.Fig. 2 In, though disclosing the formation form of recess portion 38, through portion can also be formed in same position.Detailed composition in relation to recess portion 38, in detail After being set forth in.

Top flat 32 is the skin for directly contacting wearer's in-leg, uses the structure for permeating the body fluid such as urine to absorber 31 Part.Therefore, top flat 32 is constituted with the liquid permeability material of high flexibility.In addition, alleged " liquid permeability " means in this case specification： For example, at normal atmospheric pressure, when the water 5ml of room temperature is poured on above sample, time less than 1 minute, water is just permeable Property.Furthermore the example for constituting the liquid permeability material of top flat 32 has woven fabric, non-woven fabrics or porous film.Furthermore, it is also possible to Such as the fiber of the thermoplastic resin of polypropylene or polyethylene, polyester, nylon etc is imposed into hydrophilicity-imparting treatment, then nonwoven is made The product of cloth.

Tergite 33 is to prevent the body fluid for being perforated through top flat 32 and being absorbed the absorption of body 31 from escaping to external component.Therefore, Tergite 33 is constituted with opaque liquid material.In this case specification, alleged " opaque liquid " means：For example, in standard atmospheric pressure Under, the water 5ml of room temperature is fallen when on sample, even if experience 1 minute or more, the property that water will not still permeate.Constitute tergite 33 The useful polyvinyl resin of example of liquid-tight material etc. made of plastic film.In particular, tergite 33 is preferably using formation There is micro- porous polyethylene film of multiple 0.1~4 μm of micropore.

In addition, absorbability ontology 30 also has cover plate in the not face skin surface side of tergite 33 other than above-mentioned composition 34.In order to improve the feel of covering tergite 33, cover plate 34 is fitted in the not face skin face of tergite 33.Constitute the material of cover plate 34 As long as using woven fabric or non-woven fabrics.In particular, constitute cover plate 34 material preferably use polyethylene, polypropylene or The thermoplastic resin non-woven fabrics or Wet-laid non-woven fabric of person's polyester etc.

Furthermore other than above-mentioned composition, absorbability ontology 30 also has the component for being used to constitute three-dimensional corrugation.Three-dimensional corrugation It is configured by the left and right sides edge along absorber 31 and is had a pair of of lateral plate 35 of anti-water-repellancy and configure the width in the lateral plate 35 One or more three-dimensional corrugation telescoping member 36 of ora terminalis is constituted on the inside of degree direction.Lateral plate 35 has：It fixes along its length In the fixed part towards skin face of top flat 32, and it is located at compared with the fixed part more in the inner part in width direction and is not fixed and is pushing up The free end of piece 32.It stretches moreover, the free end of the lateral plate 35 is fixed with three-dimensional corrugation along its length with elongation state Component 36.Therefore, when three-dimensional corrugation telescoping member 36 is shunk, because can be holded up by the free end of its convergent force, lateral plate 35 Form three-dimensional corrugation.The three-dimensional corrugation formed in this way is holded up along the two sides edge of absorber 31, and performance prevents wearer from arranging The leakage preventing wall function that the body fluid let out laterally leaks out.

Furthermore other than above-mentioned composition, left and right sides edge of the absorbability ontology 30 along 30 width direction of absorbability ontology Also there is leg telescoping member 37.Leg telescoping member 37 is for example fixed on the non-of lateral plate 35 with the state extended along its length Towards skin face.When leg telescoping member 37 is shunk, lateral plate 35 can scratch wrinkle and form multiple thin gauffers (leg creases).

(linking part)

Disposable diaper 100 of the invention has again absorbability ontology 30 is linked to predecessor's exterior body 10 and rear body The linking part 40 of the two of exterior body 20 or the exterior body of any one.In this case embodiment described in the specification, be equipped with to Connection absorbability ontology 30 is with the front side coupling member 40A of predecessor's exterior body 10 and to link absorbability ontology 30 with after The rear side coupling member 40B of body exterior body 20 is as linking part 40.In addition, in the present invention, as long as linking part 40 is set to 1 side of predecessor With at least one side of rear 2 side of body.In particular, linking part 40 is preferably equipped with outside at least connection absorbability ontology 30 and rear body Fill the form of body 20.

Furthermore as shown in the sectional view of Fig. 3, in present embodiment, front side coupling member 40A and predecessor's exterior body 10 and suction The property received ontology 30 belongs to part body formula component out of the ordinary.Equally, rear side coupling member 40B and rear body exterior body 20 and absorbability ontology 30 Also belong to part body formula component out of the ordinary.But though omitting in attached drawing, front side coupling member 40A (linking part 40) is formed as with before Body exterior body 10 is in one-piece member, be may be alternatively formed to absorbability ontology 30 in one-piece member.Equally, rear side coupling member 40B (linking part 40) is formed as being may be alternatively formed in one-piece member with absorbability ontology 30 with rear body exterior body 20 in one Body formula component.

As shown in Figures 2 and 3, each coupling member 40A, 40B of front side and rear side configuration in each exterior body 10,20 and absorb The not face skin surface side of property ontology 30, width direction are then formed as and each exterior body 10,20 roughly the same width.Each connection structure Part 40A, 40B are Chong Die with length direction a part of each exterior body 10,20, each to link in the part in addition to the lap The width direction both ends of component 40A, 40B are subjected to side sealing.Also that is, a left side for each coupling member 40A, 40B width direction Right both ends are equipped with side sealing portion 4 with the part except each exterior body 10,20 laps at this.In addition, each exterior body 10, In 20 width direction both ends, with the part except each coupling member 40A, 40B lap as side sealing portion 4, and It is engaged with each other by front side coupling member 40A and rear side coupling member 40B in the left and right side sealing portion 4 and is made underwear type.

As shown in figure 3, each coupling member 40A, 40B are folded into section substantially N font, in each coupling member 40A, 40B In upper end, the region towards skin surface side is engaged in each exterior body 10,20, and in the lower end of each coupling member 40A, 40B, face Absorbability ontology 30 is then engaged in the region of skin surface side.If illustrate, coupling member 40A, 40B have：Wear shape In upward convex to upper fold 41 in state；It and is in downwardly convex downward folding part 42 in wearing effect.In present embodiment, if will be to Upper fold 41 is compared with downward folding part 42, and relatively, to upper fold 41 in not face skin surface side, downward folding part 42 then exists position Towards skin surface side.These width directions to upper fold 41 with downward folding part 42 along each coupling member 40A, 40B are linearly prolonged It stretches.Therefore, by folding along these to upper fold 41 and downward folding part 42, each coupling member 40A, 40B are in section substantially N Font, and being formed includes the part for being laminated into 3 layers.In this case specification, it can be folded along to upper fold 41 and downward folding part 42 Each coupling member 40A, 40B construction be known as " tuck ".In present embodiment, though each coupling member 40A, 40B are made section Substantially N font, but not limited to this, can also be in the section substantially font of falling N or the construction with multiple tucks.

In addition, as shown in figure 3, each coupling member 40A, 40B using folding part 42 to upper fold 41 and downwards as boundary line and Intermediate region 43, inside region 44 and lateral area 45 can be divided into.Intermediate region 43 is located to upper fold 41 and downward folding Region between portion 42.Furthermore inside region 44 is top to be extended to from downward folding part 42 to each exterior body 10,20 sides, and have There is the region of the junction 44a for the not face skin surface side for being engaged in the exterior body.In addition, in the example of Fig. 3, inside region Though 44 whole region is formed as junction 44a, as long as 44 at least part of inside region is bonded on each exterior body 10,20 ?.Also, lateral area 45 is to extend to lower section to upper fold 41 to 30 side of absorbability ontology, and have and be engaged in the absorption The region of the junction 45a of the not face skin surface side of property ontology 30.In addition, lateral area 45 is in the example of Fig. 3 with lower end A part of region of side (lower crotch side) as junction 45a, but lateral area 45 can also whole region be bonded on absorbability Ontology 30.Each junction 44a, 45a described herein as can be realized using the known bonding agent such as hot-melt adhesive.

In example shown in Fig. 3, the inside region 44 of each coupling member 40A, 40B are bonded on each exterior body 10,20 length The not face skin face of direction lower end.In addition, the lateral area 45 of each coupling member 40A, 40B are bonded on absorbability ontology 30 Length direction upper end not face skin face.In this way, each coupling member 40A, 40B can play each exterior body of connection 10,20 with the effect of absorbability ontology 30.In addition, the inside region 44 shown here as each coupling member 40A, 40B is bonded on respectively The example of the lower end side of exterior body 10,20.But the inside region 44 also engageable upper end side in each exterior body 10,20.Inside Region 44 will be bonded on which position in the not face skin face of each exterior body 10,20, be freely to design to a certain extent.

In addition, returning Fig. 2 to be illustrated, each coupling member 40A, 40B are being in upper fold 41 and downward folding part 42 Folded state.In this state, at least part of intermediate region 43 in entire width direction region has engaging zones 43a, be strippingly bonded on intermediate region 43 faces the position towards skin surface side.Furthermore in example shown in Fig. 2, Intermediate region 43 has been formed locally engaging zones 43a, and the part other than the part is then used as non-set out region 43b.For example, ginseng When illustrating according to the example of Fig. 3, inside region 44 be located at intermediate region 43 towards skin surface side, engaging zones 43a shown in Fig. 2 In, intermediate region 43 and inside region 44 are in engagement state.In addition, intermediate region 43 can substitute inside in engaging zones 43a It region 44 can also positioned at the lateral area 45 or absorbability ontology 30 of its not face skin surface side or intermediate region 43 to engage The lateral area 45 or absorbability ontology 30 positioned at its not face skin surface side are engaged to come together with inside region 44.Side according to this Formula, in engaging zones 43a, each coupling member 40A, 40B are fixed into folded state, to limit its careless expansion.Passing through will Engaging zones 43a removing, can be such that each coupling member 40A, 40B is unfolded.In addition, Fig. 3 is the display non-set out region portion 43b The profilograph divided.

In Fig. 2, conceptually apply shading in engaging zones 43a to show.In example shown here, engaging zones 43a is configured to：In each coupling member 40A, 40B and each exterior body 10,20 regions for being overlapped in thickness direction, engaging zones 43a is located at left and right sides of the width direction of 30 region of absorbability ontology, without Chong Die with absorbability ontology 30.That is, bowing Depending on, the length direction range of each exterior body 10,20, each coupling member 40A, 40B and 30 overlapping parts of absorbability ontology As non-set out region 43b.In this way, engaging zones 43a can also be defined as：In range not Chong Die with absorbability ontology 30 In, in the region in width direction with one fixed width.But in underpants-style diapers, former side face sealing portion 4 itself can be played The function of engaging zones 43a.Therefore, in underpants-style diapers, it can say and be not necessarily intended to recycle hot melt viscous except side sealing portion 4 It connects agent etc. and engages coupling member 40A, 40B with each exterior body 10,20.That is, the engaging zones 43a shown in Fig. 2 with shading Omission can be given.

If according to above-mentioned composition, by the way that company is arranged between absorbability ontology 30 and exterior body 10,20 with part body mode out of the ordinary Knot 40 makes the extensibility of tuck be improved to form tuck.That is, when by absorbability 30 pulling of ontology, linking part 40 can be with The movement and tuck is unfolded, therefore be to be easier to that tuck is unfolded.Then, if tuck is through being unfolded, tuck is by wearer When clothes worn etc. pushes, so that it may the function just like side Pu is played, it may also be desired that the moisture of diaper inside will be stranded in by playing The effect of discharge.In addition, each exterior body 10,20 is linked in advance with absorbability ontology 30 by each coupling member 40A, 40B, then In each coupling member 40A, 40B expansion for constituting tuck, each exterior body 10,20 and absorbability ontology 30 can be made towards length direction It leaves, and can be towards the elongated lengthwise of disposable diaper.Fig. 4 and Fig. 5 is conceptually to show by by engaging zones 43a Each coupling member 40A, 40B is unfolded in removing, the spatial spread for defining these coupling members, and makes each exterior body 10,20 The situation separated with absorbability ontology 30.In this way, it open up the tuck of each coupling member 40A, 40B can according to need by being formed The structure opened, the movement displacement for making each exterior body 10,20 or absorbability ontology 30 that can follow wearer adjusts, therefore can effectively prevent The situation in gap is only generated between wearer's skin and diaper.Moreover, because fit performance of the diaper to wearer's skin improves, therefore Wearing feeling can be promoted.In the case where aforementioned engaging zones 43a can be removed towards length direction, by removing engaging zones 43a, Each coupling member 40A, 40B can be made to be unfolded as shown in Figures 4 and 5.

Furthermore as shown in Figures 2 and 3, by each coupling member 40A, 40B along complete to upper fold 41 and downward folding part 42 In the state of folding, preferably by each coupling member 40A, 40B covering absorbability ontology 30 length direction end towards Skin face.Also that is, each coupling member 40A, 40B are in the state folded, the preferably intermediate region 43 of linking part 40 and absorbability The absorber 31 of ontology 30 is overlapped in thickness direction.In this situation, as shown in figure 3, making exterior body 10,20, coupling member Lateral area 44, the intermediate region 43 of coupling member, the absorber 31 of absorbability ontology, coupling member lateral area 45 from face It is sequentially overlapped to skin surface side in thickness direction.The end of thereby structure, the length direction of the absorber 31 of absorbability ontology is In being housed in the state being formed in the tuck inner space of each coupling member 40A, 40B.In addition, so-called herein " inside tuck Space ", which refers to, to be had between the intermediate region 43 and lateral area 45 of each coupling member 40A, 40B towards under upper fold 41 The downwardly open space just extended.Moreover, the end for constituting the length direction of the absorber 31 of absorbability ontology 30 is preferably It is contained in such tuck inner space.Thereby structure, the body fluid or soft stool flowed along the length direction of absorbability ontology 30 can It is contained in space, to prevent portion's leakage outward.

Moreover, can make to be detained in wearing effect by forming space when each coupling member 40A, 40B are in folded state Moisture inside disposable diaper imports the space.Moreover, the space inside the tuck can be to the width side of disposable diaper To extension.Therefore, the moisture for importing the space can be made to spread towards the width direction of disposable diaper.As a result, especially absorbability Aeration near the end of the length direction of ontology 30 is improved, and the inside of disposable diaper is not easy bored wet.

In addition, as shown in Fig. 2, absorbability ontology 30 width direction at left and right sides of be equipped with engaging zones 43 the case where when, By each coupling member 40A, 40B for extending in the width direction extend to upper fold 41 (referring to Fig. 3), along its length connect Edge, intermediate region 43 and the lateral area 45 for closing region 43a, can define the space with downwardly open portion.Thus, it inhales The end of the length direction of the property received ontology 30 can be housed in the space.In particular, constituting the absorber 31 of absorbability ontology 30 The end of length direction be preferably housed in space defined herein.

In addition, intermediate region 43 can not also strippingly be engaged in inside region 44 or lateral area in engaging zones 43a 45.In this situation, due to intermediate region 43 on the 43b of non-set out region and be not engaged in be located at towards skin surface side and non-face To the position of skin surface side, so each coupling member 40A, 40B can freely be unfolded according to need.In this case, it such as wears When person's setting in motion, in non-set out region 43b, the tuck of each coupling member 40A, 40B are with regard to unfolded.Due to the movement of wearer When the non-deployed condition and unfolded state of each coupling member 40A, 40B being presented repeatedly, because of the sky defined by each coupling member Between will when and the when of expansion and reduce, make each coupling member tuck part generate just like side Pu function, make to be stranded in the sky Interior air is persistently discharged.By the expansion for utilizing tuck in this way, it is easy to each coupling member 40A, 40B will be stranded in Space in moisture discharge, and the aeration of tuck forming part can be improved.In addition, the width side of coupling member 40A, 40B To the left and right in both ends, in addition to exterior body 10,20 laps, though side sealing is imposed, it can also be by the overlapping portion Divide and seals with exterior body 10,20 together side at peelable or not peelable.By the lap and exterior body 10,20 together side When face seals, engaging zones 43a can be omitted.In addition, the length side in the width direction left and right ends portion of coupling member 40A, 40B Not stripable board side can also in addition be made with exterior body 10,20 to whole region to seal.

In this way, it intermediate region 43 and engages the engaging zones 43a at its opposite position and can temporarily engage for stripable board It is engaged with not stripable board any.The stripable board of engaging zones 43a described herein as temporarily engages and not stripable board Engagement can be realized using the known bonding agent such as hot-melt adhesive, be selected as long as the coating weight or adhesion strength that adjust its bonding agent Select stripable board or not stripable board.So-called stripable board engagement state, it is intended that when being for example susceptible to be removed in advance The two is removed, the joint shape of rhegma or breakage occurs for the sheet element without making intermediate region 43 or constitute its opposite position State.Relatively, so-called not stripable board engagement state then means not to be susceptible to for example to remove in advance, if being then intended to implement to shell From when, then can intermediate region 43 or constitute its opposite position sheet element occur rhegma or breakage engagement state.In addition, connecing Though the whole region of intermediate region 43 can be covered by closing region 43a, in this situation, engaging zones 43a can by intermediate region 43 Its opposite position is arrived in removing ground engagement (also that is, interim engagement).Furthermore though engaging zones 43a can also can not by intermediate region 43 It is joined to removing its position faced, but in this situation, engaging zones 43a becomes the width for being locally provided at intermediate region 43 Spend direction.

(the sheet material lit-par-lit structure of linking part)

Then, referring to Fig. 6, the construction for just constituting the sheet element of linking part 40 (coupling member 40A, 40B) etc. is illustrated. Fig. 6 is will to be amplified the situation shown around rear side coupling member 40B shown in Fig. 3.Though lifting rear side coupling member 40B below Construction for illustrate, but the construction of rear side coupling member 40B described herein as is also applicable in front side coupling member 40A.

As shown in fig. 6, rear side coupling member 40B, which has, is laminated the construction of at least 2 sheet elements in thickness direction.That is, Fig. 6 institute In the example shown, rear side coupling member 40B has leakage prevention sheet 51 and is fitted in the outer sheet 52 of its not face skin surface side.

Leakage prevention sheet 51 be opaque liquid sheet element, by prevent body fluid from rear side coupling member 40B leakage for the purpose of and configure Person.Same as aforementioned tergite 33, leakage prevention sheet 51 is preferably using plastic films such as polyvinyl resins.In particular, in order to ensure rear The aeration of side coupling member 40B, it is preferable to use be formed with micro- porous polyethylene film of multiple 0.1~4 μm of micropore As leakage prevention sheet 51.By that can prevent from reaching rear side to form leakage prevention sheet 51 with the sheet element of aeration and opaque liquid The body fluid of coupling member 40B leaks out, and can inhibit the position and wet bored situation occurs.

Outer sheet 52 is the sheet element being mainly made of non-woven fabrics, to improve the feel in the not face skin face of leakage prevention sheet 51 For the purpose of and configure.Though non-woven fabrics used herein is not particularly limited, can only enumerate such as Breathable nonwoven, point bonding non-woven fabrics, The materials such as spun-bonded non-woven fabrics, air-laid nonwoven fabrics, melt spraying non-woven fabrics, SMS non-woven fabrics, SMMS non-woven fabrics.Substantially, have saturating Fluidity and aeration and the good sheet element of feel can be used and make outer sheet 52.

In addition, as shown in Figures 3 to 6, in present embodiment, the front side of disposable diaper and each coupling member of rear side 40A, 40B are preferably one or more linking part telescoping member 46 having along configuring to upper fold 41.Linking part telescoping member 46 be the elastic telescopics component such as silk thread shape elastic rubber, along the width direction of disposable diaper with elongation state configure to Upper fold 41.As previously mentioned, constituted because each coupling member 40A, 40B are laminated by leakage prevention sheet 51 and outer sheet 52, therefore linking part As long as telescoping member 46 is fixed between leakage prevention sheet 51 and outer sheet 52.It is stretched by configuring linking part to upper fold 41 along this Contracting component 46, then by the contraction of the linking part telescoping member 46, the intermediate region 43 of each coupling member 40A, 40B and each Gap is just not likely to produce between exterior body 10,20.Therefore, the appearance of diaper is improved, and fitness can also be promoted.

Furthermore as shown in Figures 1 and 2, in each coupling member 40A, 40B, the length direction of disposable diaper separates predetermined Interval is configured with a plurality of lower abdomen telescoping member 47 extended in the width direction.Lower abdomen telescoping member 47 is along disposable diaper The state of elongation of width direction be fixed on each coupling member 40A, 40B.But lower abdomen telescoping member 47 is simultaneously not configured each The central portion of coupling member 40A, 40B width direction, alternatively, imposing such as locality in order not to make it show retractility and cutting It is disconnected.That is, lower abdomen telescoping member 47 is substantially positioned at the width direction two sides of absorbability ontology 30.In addition, lower abdomen is flexible Component 47 can also locally overlap the width direction both ends of absorbability ontology 30.Each lower abdomen telescoping member 47 and connection above-mentioned Portion's telescoping member 46 is same, as long as being fixed between leakage prevention sheet 51 and outer sheet 52.When lower abdomen telescoping member 47 is shunk, Coupling member 40A, 40B will scratch contracting and form multiple thin gauffers (lower abdomen rivel).

[recess portion of absorber]

Referring to Fig. 2 to Fig. 6, the recess portion 38 for being just formed in the absorber 31 of absorbability ontology 30 is illustrated.Absorber 31 It is recessed compared to adjacent surrounding position towards thickness direction at recess portion 38.For example, recess portion 38 is can be by that will constitute absorber The channel form part that 31 absorbent material imposes compression to be formed.Alternatively, absorber 31 can also be to be previously provided with recess portion 38 Mode form absorber 31.In addition, absorber 31 can also have the through portion for running through thickness direction to substitute recess portion 38. The example of through portion has through hole or cracks.When recess portion 38 is channel form, preferably make being recessed towards skin face for absorber 31 It forms, but the not face skin face of absorber 31 can also be made to be recessed, or can also make towards skin face and not face skin Face both sides are recessed.Absorbability ontology, due to air can drawing-in thickness direction, even if therefore the back side in absorber 31 have When the case where recess portion, after moisture once passes through thickness direction, i.e., it can be flowed via the recess portion being present between absorber and tergite It moves to the end of absorber and reaches linking part.Therefore, it even if recess portion 38 is formed in the side of wearer's opposing face, can also play Prevent the effect of moisture entrapment.In addition, when the case where recess portion 38 is channel form, it is assumed that the absorber at the position of not formed recess portion 38 31 with a thickness of 100% when, if the thickness of the absorber 31 of the forming part of recess portion 38 is set as 10~90%, 15~80%, Or 20~70%.

Furthermore recess portion 38 is formed in the end of the length direction of absorber 31.Specifically, recess portion 38 is preferably formed in suction The range Chong Die with each coupling member 40A, 40B and each exterior body 10,20 of the acceptor 31 (model of predecessor 1 shown in Fig. 2 and rear body 2 It encloses).In particular, recess portion 38 is preferably formed at least on the range Chong Die with each exterior body 10,20 of absorber 31.Example shown in Fig. 2 In son, predecessor 1 is both equipped with coupling member 40A, 40B with rear body 2.Therefore, the recess portion 38 of absorber 31 is also preferred shape At the two end of the end of 2 side of end and rear body in 1 side of predecessor.But as long as the recess portion 38 of absorber 31 at least formed at The end of the side of coupling member 40A, 40B is set.Therefore, it is not necessary to have to for recess portion 38 to be formed in 31 length of absorber The end on direction both sides.

In example shown in Fig. 2, recess portion 38 is formed as linear, and is crossed as lattice-shaped pattern by a plurality of linear recess portion 38. If illustrate, in the example in figure 2, to form rhomboid lattice-shaped pattern by a plurality of linear recess portion 38.It is so-called herein " rhomboid lattice-shaped pattern " is with regard to prolonging in top view to length direction and the inclined direction of width direction (that is, oblique) The a plurality of linear recess portion 38 stretched intersect and for pattern of the zoning at the non-recess area of rhomboid (diamond shape).In addition, so-called non- Recess area refers to the region of not formed recess portion 38 in absorber 31.A plurality of linear recessed in addition, though attached drawing omits display Portion 38 can also be formed with the pattern of rectangular clathrate.So-called herein " pattern of rectangular clathrate " is with regard in top view, by putting down Row extends a plurality of linear recess portion 38 of length direction and intersects and area with a plurality of threadiness recess portion 38 for extending in parallel in width direction It is divided into the pattern of the non-recess area of rectangular (quadrangle).In this way, by making multiple recess portions 38 form rhomboid clathrate Or the lattice-shaped patterns such as rectangular clathrate, the skin sense of touch and aeration of absorbability ontology 30 can be improved.But the shape of recess portion 38 Shape is not limited to above-mentioned lattice-shaped pattern.For example, recess portion 38 can also be 1 straight line extended along its length, it can also be edge The a plurality of straight line that length direction extends in parallel.It include the length for reaching absorber 31 preferably in recess portion 38 in any pattern Spend the pattern of direction ora terminalis.Also that is, the length direction end face of absorber 31 is also preferably formed with recess portion 38.

Disposable diaper of the invention is formed in the tuck of each coupling member 40A, 40B by importing the air in diaper Inner space is to improve aeration.But also consider in the wearing effect of disposable diaper, tuck can in a thickness direction by Clothing flattens, and makes to be not likely to produce space between tuck and wearer's skin, causes moisture entrapment in situation herein.Thus, as before Mode is stated, forms one or more recess portions 38 by the end of the length direction in absorber 31, even if in wearing effect, Air can be made to be directed into tuck inner space via the recess portion 38.Therefore, which has the function of groove of ventilating.According to this The end of mode, the length direction of the absorber 31 by side is arranged in linking part 40 forms recess portion 38, because that can exist by recess portion 38 Ensure gap between absorber and wearer's skin, aeration of the linking part 40 in folded state when can be improved.Moreover, throwing Abandoning formula diaper is worn in state, even if in the state that the tuck of linking part 40 is flattened by clothing, by the end of absorber 31 Portion forms recess portion 38 and thus prevents the situation of moisture entrapment because that will generate gap between tuck and wearer's skin.Perforation Portion also equally has the effect of preventing moisture entrapment with recess portion 38, very helpful to the improvement of aeration.

[change case]

Then, referring to Fig. 7, just the change case of disposable diaper of the present invention is illustrated.Fig. 7 is the section structure of rear 2 side of body The enlarged drawing made, but 2 side structure of rear body described herein as is also applied for 1 side of predecessor.

In the example shown in Fig. 7, compared to example shown in fig. 6, absorbability ontology 30 is in elongated lengthwise.Also Though that is, as shown in fig. 7, absorbability ontology 30 be engaged in rear side coupling member 40B towards skin face, the absorbability ontology 30 But to upper fold 41 and intermediate region 43 is extended to beyond rear side coupling member 40B.Therefore, absorbability ontology 30 not only engages In the lateral area 45 of rear side coupling member 40B, be also bonded to intermediate region 43 towards skin face.In other words, rear side links Component 40B has the junction 45a that engage to absorbability ontology 30 of lateral area 45, also, intermediate region 43 also with pair The junction 43c that absorbability ontology 30 engages.In addition, the preferred position of length direction ora terminalis of absorbability ontology 30 links in rear side The intermediate region 43 of component 40B.Also that is, downward folding of the length of absorbability ontology 30 preferably without departing from rear side coupling member 40B Portion 42.

In addition, the absorber 31 of absorbability ontology 30 is more than the upward of rear side coupling member 40B in example shown in Fig. 7 Folding part 41 simultaneously extends to intermediate region 43.Therefore, absorber 31 have along rear side coupling member 40B to upper fold 41 to towards The fold back portion 31a of skin surface side fold back.To, absorber 31 in the forming part of fold back portion 31a in thickness direction in an overlapping two Layer.Absorber 31 is because be the component by given thickness is constituted and had comprising absorbent materials such as fluff pulps, therefore rolling over upwards When portion 41 is by 31 fold back of absorber, by the rigidity of the absorber 31, the inner space of tuck can be made to extend.In particular, passing through Absorber 31 is imposing fold back to upper fold 41, even if push tuck from outside, the inner space of tuck is also difficult to collapse to collapse.Cause This, in change case shown in Fig. 7, because the inner space of tuck can maintain relatively to spread, therefore the aeration near the tuck is able to It improves.

In addition, the absorber 31 of absorbability ontology 30 has thin layer area in the end of length direction in example shown in Fig. 7 Domain 39.Coating region 39 refers to the thickness of absorber 31 at least than the absorber 31 of the central portion of disposable diaper length direction The thin part of thickness.Coating region 39 can be formed by for example compressing the absorbent material for constituting absorber 31.Coating region 39 are located at the end of the length direction of absorber 31, and preferably extend in the banded regions in the entire width direction region of absorber 31 Domain.The thickness of the absorber 31 of coating region 39, it is assumed that the absorber 31 of the central portion of length direction with a thickness of 100% when, As long as the thickness of the absorber 31 is located at 10~80%, 20~75% or 30~70%.In addition, the coating region 39 Recess portion 38 above-mentioned can be formed.

Coating region 39 may be disposed at the two of 10 side of predecessor's exterior body and rear 20 side of body exterior body in absorber 31 Or the end of any one.In particular, coating region 39 is preferably the end for being located at coupling member 40A, 40B setting side.Side according to this Formula makes local thickness's thinning of absorber 31 by the end setting coating region 39 in coupling member 40,40B setting side, can Improve the aeration of the end.

In addition, as shown in fig. 7, coating region 39 is preferably formed in the end of absorber 31 along rear side coupling member The position to 41 fold back of upper fold of 40B.Specifically, it is preferable that be formed with coating region in the fold back portion 31a of absorber 31 39, moreover, in absorber 31 along into the state of 41 fold back of upper fold, preferably in the position (overlapping portion for facing fold back portion 31a Position) form coating region 39.In this way, by the way that 31 position of absorber for being located to 41 vicinity of upper fold is set as coating region 39, it is easier to absorber 31 along this to 41 fold back of upper fold.In addition, by by the fold back portion 31a of absorber 31 and its opposite Position is set as coating region 39, then when by the end of absorber 31 along to 41 fold back of upper fold, can avoid its thickness became Greatly.Therefore, it when even if by 31 fold back of absorber the case where, also can avoid undermining wearing feeling.

In the example of above-mentioned Fig. 7, though with absorber 31 there is situation when coating region 39 to illustrate, the absorber 31 can also have low weight per unit area region to substitute coating region 39, which is the absorber (31) weight per unit area is less than the weight per unit area in the absorber (31) of the central portion of disposable diaper length direction. The case where by having coating region 39 with absorber 31 there are low weight per unit area region, is same, and absorber 31 returns Rolling over easness and wearing feeling and can get improves.Low weight per unit area region can be by for example reducing the absorption of absorber end Volume density is formed.Assuming that when the weight per unit area of the absorber 31 of the central portion of length direction is 100%, then low unit plane Product weight area can have 50~80%, 20~75% or 30~70% weight per unit area.Low weight per unit area region The thickness of absorber 31 can be identical as the thickness of absorber 31 of the central portion of length direction, can also be different.Low unit area Weight area is located at the end of the length direction of absorber 31, preferably extends the entire width direction region of absorber 31 Belt-like zone.Other preferred embodiments of coating region 39 are equally applicable to low weight per unit area region.Absorber 31 There can be the two of coating region 39 and low weight per unit area region.

Related change case shown in Fig. 7, other compositions can be used identical with the embodiment illustrated referring to figs. 1 to Fig. 6 It constitutes.

More than, in this case specification, in order to express the contents of the present invention, carried out while referring to attached drawing of the invention real Apply the explanation of mode.But the present invention is not limited to above embodiment, and should include current row dealer can be according to this case specification The item of record be readily contemplated by one that it is various it is self-evident sexually revise form or improvement form.

Utilization possibility in industry

It present invention can be suitably applied to the disposable diapers such as underwear type or band type.To which the present invention is suitable for application in deserted Diaper manufacturing industry.

Description of symbols

1 predecessor

Body after 2

3 lower crotch

4 sides sealing portion

5 loins opening portions

6 leg opening parts

10 predecessor's exterior bodies

11 inner sheets

12 outer plates

13 loins telescoping members

Body exterior body after 20

21 inner sheets

22 outer plates

23 loins telescoping members

30 absorbability ontologies

31 absorbers

31a fold back portion

32 top flats

33 tergites

34 cover plates

35 lateral plates

36 three-dimensional corrugation telescoping members

37 leg telescoping members

38 recess portions

39 coating regions

40 linking parts

Coupling member on front side of 40A

Coupling member on rear side of 40B

41 to upper fold

42 downward folding parts

43 intermediate regions

43a engaging zones

The non-set out region 43b

The junction 43c

44 inside regions

The junction 44a

45 lateral areas

The junction 45a

46 linking part telescoping members

47 lower abdomen telescoping members

51 leakage prevention sheets

52 outer sheets

100 disposable diapers

Claims

1. a kind of disposable diaper, has：Predecessor's exterior body (10) positioned at wearer's abdomen side；Positioned at wearer back side Body exterior body (20) afterwards；And the absorbability ontology (30) positioned at wearer's in-leg,

Prior absorbent ontology (30) has：Absorber (31)；The liquid permeability towards skin face of coating said absorbent (31) Top flat (32)；And the opaque liquid tergite (33) in the not face skin face of coating said absorbent (31), it is characterised in that：

Prior absorbent ontology (30) via have the width direction for extending aforementioned disposable diaper to upper fold (41) and The linking part (40) of downward folding part (42) and be linked to aforementioned predecessor's exterior body (10) and it is aforementioned after body exterior body (20) the two Or the exterior body of any one,

Said absorbent (31) at least aforementioned linking part (40) position aforementioned predecessor's exterior body (10) side and it is aforementioned after The two of body exterior body (20) side or the end of any one have the recess portion (38) being recessed to the thickness direction of the absorber (31) Or penetrate through the through portion of the thickness direction of the absorber (31).

2. disposable diaper according to claim 1, which is characterized in that

Aforementioned linking part (40), which has, is located at the aforementioned intermediate region between upper fold (41) and aforementioned downward folding part (42) (43),

Aforementioned linking part (40) is in the aforementioned state to upper fold (41) and aforementioned downward folding part (42) in folding, aforementioned centre The region that region (43) is formed with the aforementioned recess (38) of said absorbent (31) or aforementioned through portion is Chong Die in thickness direction.

3. disposable diaper according to claim 2, which is characterized in that

Aforementioned intermediate region (43) has engaging zones (43a), and aforementioned engaging zones (43a) are in aforementioned linking part (40) aforementioned It is peelable or be not bonded on the middle area strippingly to upper fold (41) and aforementioned downward folding part (42) in the state folded The two or the position of any one faced towards skin surface side position and in face of not face skin surface side position in domain (43),

Aforementioned engaging zones (43a) are located at aforementioned intermediate region (43) and prior absorbent ontology (31) is not be overlapped in thickness direction Region.

4. disposable diaper according to claim 2 or 3, which is characterized in that

The said absorbent (31) of prior absorbent ontology (30) is along the aforementioned to upper fold (41) fold back of aforementioned linking part (40).

5. disposable diaper according to any one of claim 1 to 4, which is characterized in that

Said absorbent (31) aforementioned predecessor's exterior body (10) side and it is aforementioned after body exterior body (20) side the two or any one End have coating region (39) or low weight per unit area region, in the absorber (31) of aforementioned coating region (39) Thickness it is more thinner than the absorber (31) of the central portion in aforementioned disposable diaper length direction, in aforementioned low unit The weight per unit area of the absorber (31) in area weight region is than the central portion in aforementioned disposable diaper length direction The weight per unit area of the absorber (31) is smaller.